diameter: 1 1/2 in. ( 3.8 cm )
printed: on side of button: "1061"
sticker: on back of button: "1970"
Circular pin-back button: "over/popu/lation/IT'S EVERYBODY'S/PROBLEM!"; black and white.
Gift of Toni Ellen Heisler
Due to ongoing research, information about this object is subject to change.